File:Scientific amusements (1890) (14590173149).jpg

Identifier: cu31924031296126 (find matches)
Title: Scientific amusements
Year: 1890 (1890s)
Authors: Tissandier, Gaston, 1843-1899 Frith, Henry, 1840- Harry Houdini Collection (Library of Congress) DLC
Subjects: Scientific recreations
Publisher: London, New York (etc.) Ward, Lock & Co
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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ely distanced by nature. We amused ourselves frequently by examining theinfusoria which are so easily procured by taking fromsome stagnant water the mucilage adhering to thevegetation on the banks, or attached to the lower part ofwater lentils. In this way we easily captured infusoria,which, when placed under a strong magnifier, presentedthe most remarkable spectacle that one can imagine.They are animalcules, having the form of transparenttulips attached to a long stem. They form buncheswhich expand and lengthen ; then, suddenly, they areseen to contract with such considerable rapidity that theeye can scarcely follow the movement, and all the stemsand flower-bells are folded up into the form of a ball.Then, in another moment, the stems lengthen, and thetulip-bells open once more. One can easily encourage 22 OPEN-AIR SCIENCE. the production of infusoria by constructing a small micro-scopic aquarium, in which one arranges the centre in amanner favourable to the development of the lowest
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Arrangeinent of a m;croscop:c aqunnum for examining infusoria. organisms. It suffices to put a few leaves (a piece ofparsley answers the purpose perfectly)* in a small vase The infusion of parsley has the advantage of not sensibl) obscuringthe water. BUTTERFLIES. 2 3 containing water, over which a glass cover is placed, andit is then exposed to the rays of the sun. In two orthree days time, a drop of this water seen under themicroscope will exhibit infitsoria. After a certain time,too, the different species will begin to show themselves.Microscopical observations can be made on a number ofdifferent objects. Expose to the air some flour moistenedby water, and before long a mouldiness will form on it ;it is the penicillium glancum, and when examined under amagnifier of 200 to 300 diameters, cells are distinguish-able, branching out from an organism remarkable for itssimplicity. We often amused ourselves by examining,almost at hazard, everything that came within our reach,and sometimes w

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